'Display.GetRealMetrics(DisplayMetrics?)' is obsoleted on: 'Android' 31.0 and later. What should I change?

Question

I always get this message in my code but I don't know how I should replace Display.GetRealMetrics.

 DisplayMetrics displayMetrics = new DisplayMetrics();
 WindowManager.DefaultDisplay.GetRealMetrics(displayMetrics);
 int width = displayMetrics.WidthPixels;
 int height = displayMetrics.HeightPixels;

This call site is reachable on: 'Android' 31.0 and later. 'Display.GetRealMetrics(DisplayMetrics?)' is obsoleted on: 'Android' 31.0 and later.

What should I change?